Home / 8,120.78-11,208.53-4,763.73

Finding the Fourth Proportional to 8,120.78, 11,208.53 and 4,763.73

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Solution

The fourth proportional to 8,120.78, 11,208.53 and 4,763.73 is: 6,575.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.78 : 11,208.53 = 4,763.73 : x
  2. Step 2: Convert to fraction form
    8,120.78/11,208.53 = 4,763.73/x
  3. Step 3: Cross multiply
    8,120.78x = 11,208.53 × 4,763.73
  4. Step 4: Simplify right side
    8,120.78x = 53,394,386.80
  5. Step 5: Solve for x
    x = 53,394,386.80/8,120.78
  6. Step 6: Final answer
    x = 6,575.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.